747 Crash at Bagram Air Base - Hot Rod Forum : Hotrodders Bulletin Board
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Old 05-01-2013, 07:41 PM
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747 Crash at Bagram Air Base


Cargo shifting is most likely the cause. Notice the extremely high angle of attack followed by the wing dropping into a stall. This indicates a severe shift in the center of gravity (CG) of the aircraft which causes a rapid pitch up of the nose. At the slow speed of takeoff there is little that can be done to save the aircraft as the elevator does not have enough authority to over come the pitchup.

Vince

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Old 05-01-2013, 08:30 PM
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Very sad to see...
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Old 05-01-2013, 08:43 PM
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Very sad to see...
Indeed

Vince
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Old 05-01-2013, 09:39 PM
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All seven of the crew died,, Prayers going out for the family's..May they R.I.P
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Old 05-03-2013, 10:19 PM
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From a news site: "Killed along with Navigator Jaimie Brokaw in the Afghanistan crash were maintenance worker Gary Stockdale, 51, of Romulus, Mich.; pilots Brad Hasler, 34, of Trenton, Mich., and Jeremy Lipka, 37, of Brooklyn, Mich.; first officer Rinku Summan, 32, of Canton, Mich.; loadmaster Michael Sheets, 36, of Ypsilanti, Mich.; and maintenance crewman Timothy Garrett, 51, of Louisville, Ky."

If it is ruled to be cargo shifting that caused the crash, it will be hard on the family of Michael Sheets

However, if you look at it frame by frame just before impact (at time stamp 3:32:53) , there seems to be something coming off the plane - perhaps a part of the elevator? By that point, it would not have been savable by anyone or anything, and if something WAS coming off, it could have been BECAUSE of recovery efforts, and not a cause of the crash
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Old 05-05-2013, 12:23 PM
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I looked at the video several times and saw nothing falling off the aircraft. As an Air Force Loadmaster (1969-73 in the C141, C124, & C130) I can tell you that cargo loading is taken very seriously. In the C130 we were taught to load the heaviest pallet of cargo forward then lighter as you move toward the rear of the aircraft. The 747-400 series cargo aircraft have very sophisticated computer loading calculators and would alert the loadmaster to any loading errors that would dramatically affect the CG of the aircraft before takeoff. That is why the assumption of the load shifting is suspect. It is entirely possible that some pallet locks failed or the palletized load itself broke loose from their pallets. I do not know what the load consisted of but if it was rolling stock that scenario is entirely possible. The cargo is loaded by cargo specialists on the ground, but the final responsibility is with the loadmaster to insure everything is correct like weight and balance, cargo compatibility, and security of rolling stock.

Vince

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Old 05-05-2013, 10:51 PM
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go to: NTSB investigating cause of plane crash at Bagram Air Base in Afghanistan that killed 7 Americans as victims are mourned - NY Daily News.

The second picture shows the plane a second or so before impact - it is frame from the same video

It seems to show a piece from the starboard horizontal stabilizer coming off.
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Old 05-06-2013, 08:20 AM
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OK, saw it in the still frame and does appear to part of the elevator. It has been reported that the plane was carrying five Army trucks (rolling stock). If one or more of the trucks broke loose and slid to the rear of the plane that could account for the damage to the elevator (just speculation).

Vince

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Old 06-08-2013, 08:17 PM
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Investigators believe the cause of the crash was indeed cargo shift. AvWeb is reporting that also the charred remains of some cut tie down straps were found in the wreckage. Makes me wonder if U.S Air Force loading crews loaded the commercial plane (as is typical when military cargo is involved) or did Afghan loading crews load it. Ratchet type tie down straps are not typically used to tie down rolling stock such as military vehicles that is what 10K chains are for. At any rate it is the Aircraft Loadmasters responsibility to insure the cargo is secure and the weight and balance is within limits.

Vince
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